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TXV–CLP-KIT (07/15)

Page 18

TXV Kit Installation – ETI Cased Coils

Cased Coils that are intended for

HEAT/COOL

applications,

are shipped with the matching TXV

Kit that must be field installed to enable operation of the system in the cool mode.

The following procedure is for the installation of the TXV Kit which must be done prior to making the
line set connections to the cased coil.

Figure 10 illustrates the TXV Kit as shipped with the external parts for field installation identified.  In
Figure 10, the pressure equalizer tubing and suction line Tee are shown connected to the control
box for illustration purposes.  These parts are shipped with the TXV control box and are field
assembled to the control box and to the suction line.  The TXV (thermal expansion valve), CAV
(cooling assist valve) and interconnecting tubing are located inside the control box to ensure
performance.

Figure 10. TXV Control

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Содержание TXV Kit

Страница 1: ...TXV CLP KIT 07 15 Copyright 2015 Earthlinked Technologies Inc EarthLinked TXV Kit Installation Manual for Classic and Prime Systems ...

Страница 2: ...this manual Failure to provide installation and service by an authorized installer consistent with this manual will void the limited warranty coverage for the system EarthLinked Technologies shall not be liable for any defect unsatisfactory performance damage or loss whether direct or consequential relative to the design manufacture construction application or installation of the field specified c...

Страница 3: ...l Nomenclature 2 Safety 5 Equipment Manuals 5 Component Matching 6 Air Handler and Cased Coil Placement 7 TXV Kit Installation ETI Air Handlers 8 TXV Kit Installation ETI Cased Coils 18 TXV Kit Installation Non ETI Brand Air Handler or Cased Coil 27 ...

Страница 4: ...3 Figure 5 Positioning the Pressure Equalizer Tee 14 Figure 6 Thermal Bulb Positioning 15 Figure 7 Clamping the Thermal Bulb 16 Figure 8 Insulating the Thermal Bulb 16 Figure 9 TXV Liquid Line Connections 17 Figure 10 TXV Control 18 Figure 11a TXV Control installed near Cased Coil Vertical Application 19 Figure 11b TXV Control installed near Cased Coil Horizontal Application 20 Figure 11c TXV Cont...

Страница 5: ...nual AVS ACL IM Prime Select Series Air Handler Installation Manual AVS APS IM Classic and Prime Select Series Cased Coil Installation Manual CCS ACLPS IM CAUTION Indicates a potentially hazardous situation or an unsafe practice which if not avoided may result in injury or equipment or property damage IMPORTANT Notification of installation operation or maintenance information which is important bu...

Страница 6: ... sized compressor unit See Figure 1 below for correctly matched components COMPONENT MATCHING TABLE COMPRESSOR UNIT NOMINAL CAPACITY BTUH TXV KIT MODEL 024 24 000 TXV 2430CE 030 30 000 TXV 2430CE 036 36 000 TXV 3672CE 040 40 000 TXV 3672CE 042 42 000 TXV 3672CE 048 48 000 TXV 3672CE 050 50 000 TXV 3672CE 054 54 000 TXV 3672CE 060 60 000 TXV 3672CE Figure 1 Component Matching Table ...

Страница 7: ...r Handler and Cased Coil Placement Guidelines for the air handler and cased coil placement relative to the compressor unit and other EarthLinked system components are shown in Figure 2 Figure 2 General Layout of System Components ...

Страница 8: ...ne set connections to the air handler Figure 3 illustrates the TXV Kit as shipped with the external parts for field installation identified In Figure 3 the pressure equalizer tubing and suction line Tee are shown connected to the control box for illustration purposes These parts are shipped with the TXV control box and are field assembled to the control box and to the suction line The TXV thermal ...

Страница 9: ... the air handler as shown in Figure 4b Locate the TXV control box to allow a service access of at least 12 inches in front of the box to adjust the TXV control Figure 4a TXV Control Installed on Vertical upflow downflow Air Handler Important The TXV control box must be located no more than 3 1 2 feet from the suction tube stub out on the air handler The TXV control box must be mounted above the ai...

Страница 10: ...itioned external to the air handler and can be fastened to 1 a cabinet side surface or 2 on a solid mounting surface immediately adjacent to the air handler as shown typically in Figures 4c and 4d Important The TXV control box must be located no more than 3 1 2 feet from the suction tube stub out on the air handler The TXV control box must be mounted above the air handler tubing stub outs as shown...

Страница 11: ...TXV CLP KIT 07 15 Page 11 Figure 4c TXV Control Installed next to Horizontal Left Flow Air Handler Figure 4d TXV Control Installed next to Horizontal Right Flow Air Handler ...

Страница 12: ... are shown in figure 4e The preferred mounting position for the TXV Control Box is vertical with the liquid line tube connections on the bottom However as shown in Figure 4f the Control Box can be mounted from vertical to any angle up to 90 degrees horizontal Figure 4e TXV Control Box Dimensions ...

Страница 13: ...TXV Control Box mounting Positions The following steps and positioning requirements apply to installing the TXV Control to the air handler for vertical and horizontal applications The vertical installation provides an illustrated example ...

Страница 14: ...V control box is to be fastened to the air handler be sure not to drill into the air handler internal components Fasten the TXV control box above the suction line stub out Step 2 Position the Pressure Equalizer Tee on the suction tube at least 10 inches downstream from the 90 ell as shown in Figure 5 Remove the core from Schrader valve on the Tee Figure 5 Positioning the Pressure Equalizer Tee ...

Страница 15: ... must be positioned at the 3 00 4 00 8 00 or 9 00 positions on the suction tube as illustrated in Figure 6 Figure 6 Thermal Bulb Positioning Step 4 Clamp the thermal bulb firmly against the clean suction tube and parallel to it as shown in Figure 7 Isolate the Thermal Bulb from with a cold wet cloth while Nitrogen brazing the joints on the suction line After the suction line has cooled apply the s...

Страница 16: ...TXV CLP KIT 07 15 Page 16 Figure 7 Clamping the Thermal Bulb Figure 8 Insulating the Thermal Bulb ...

Страница 17: ... box to the compressor unit also shown in Figures 3 and 9 Nitrogen braze the joints Step 6 Connect the pressure equalizer tube to the Schrader valve Do not install the core Tighten the flare connection firmly Wrap the liquid and vapor tubing including the liquid line tubing to the TXV control box with Armaflex Insul Tube or equivalent insulation of at least wall thickness between the air handler a...

Страница 18: ... set connections to the cased coil Figure 10 illustrates the TXV Kit as shipped with the external parts for field installation identified In Figure 10 the pressure equalizer tubing and suction line Tee are shown connected to the control box for illustration purposes These parts are shipped with the TXV control box and are field assembled to the control box and to the suction line The TXV thermal e...

Страница 19: ...ically in Figure 11a Locate the TXV control box to allow a service access of at least 12 inches in front of the box to adjust the TXV control Figure 11a TXV Control installed near Cased Coil Vertical Application Important The TXV control box must be located no more than 3 1 2 feet from the suction tube stub out on the air handler The TXV control box must be mounted above the cased coil tubing stub...

Страница 20: ...d to a solid mounting surface immediately adjacent to the cased coil as shown typically in Figure 11b Figure 11b TXV Control installed near Cased Coil Horizontal Application Important The TXV control box must be located no more than 3 1 2 feet from the suction tube stub out on the cased coil The TXV control box must be mounted above the cased coil tubing stub outs as shown ...

Страница 21: ...are shown in figure 11c The preferred mounting position for the TXV Control Box is vertical with the liquid line tube connections on the bottom However as shown in Figure 11d the Control Box can be mounted from vertical to any angle up to 90 degrees horizontal Figure 11c TXV Control Box Dimensions ...

Страница 22: ...sed coil for vertical and horizontal applications The vertical installation provides an illustrated example Step 1 Relieve the nitrogen holding charge on the air handler using the valve on the liquid line stub out Locate the TXV Control box within the 3 1 2 feet of the suction line stub out on the cased coil Fasten the TXV control box above the suction line stub out ...

Страница 23: ... Step 2 Position the Pressure Equalizer Tee on the suction tube at least 10 inches downstream from the 90 ell as shown in Figure 12 Remove the core from Schrader valve on the Tee Figure 12 Positioning the Pressure Equalizer Tee ...

Страница 24: ... 3 00 4 00 8 00 or 9 00 positions on the suction tube as illustrated in Figure 13 Figure 13 Thermal Bulb Positioning Step 4 Clamp the thermal bulb firmly against the clean suction tube extension and parallel to it as shown in Figure 14 Isolate the Thermal Bulb from with a cold wet cloth while Nitrogen brazing the joints on the suction line After the suction line has cooled apply the supplied cork ...

Страница 25: ...TXV CLP KIT 07 15 Page 25 Figure 14 Clamping the Thermal Bulb Figure 15 Insulating the Thermal Bulb ...

Страница 26: ...trol box to the compressor unit also shown in Figure 16 Nitrogen braze the joints Step 6 Connect the pressure equalizer tube to the Schrader valve Do not install the core Tighten the flare connection firmly Wrap the liquid and vapor tubing including the liquid line tubing to the TXV control box with Armaflex Insul Tube or equivalent insulation of at least wall thickness between the cased coil and ...

Страница 27: ...essure drop The shoulder is drilled out For system capacities of 1 5 to 3 0 Tons drill the distributor out using a 5 16 drill bit For system capacities of 3 5 to 6 0 Tons drill the distributor out using a 3 8 drill bit Do not allow drilled cuttings or debris to fall into the distributor or the feeder tubes Important A TXV Kit installed on a Non ETI brand air handler or cased coil must be pre appro...

Страница 28: ...s vertically upward or downward for the final orientation vertical or horizontal of the air handler or cased coil This is illustrated in Figure 17 When orienting the distributor and the feeder tubes make changes carefully to avoid kinking the feeder tubes The feeder tubes should have smooth large radius bends to avoid refrigerant flow restrictions Figure 17 Typical Air Handler Cased Coil After Con...

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